ASTROSAT CZTI

Data Quality Report

Orbit 26252

Creation date: 2024-06-27T19:26:37.722658
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_079T03_9000003790_26252cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26252cztM0_level2_quad_clean.evt
Size (bytes)497,931,84078,045,120
Size474.9 MB 74.4 MB
Events in quadrant A3,395,047475,926
Events in quadrant B3,353,877486,889
Events in quadrant C3,376,217476,724
Events in quadrant D4,503,144459,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143370
B0142870
C0143060
D0180880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6656550.826322%
B6656620.931490%
C66561161.742788%
D66563204.807692%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7611 6657 11 11 0.14% 0.17%
B 7611 6657 3 3 0.04% 0.05%
C 7611 6657 3 3 0.04% 0.05%
D 7611 6657 199 199 2.61% 2.99%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 170981 1013.28 833 815 167.9
A 13 254 11925 66.16 833 815 167.9
A 3 137 7574 40.25 833 815 167.9
B 5 172 68380 426.06 832 811 158.6
B 12 111 18654 112.51 832 811 158.6
B 11 111 16309 97.72 832 811 158.6
C 14 238 127188 668.51 804 809 189.0
C 2 16 65934 344.49 804 809 189.0
C 3 233 45573 236.79 804 809 189.0
D 1 52 1316916 6902.1 799 780 190.7
D 12 233 78672 408.48 799 780 190.7
D 8 195 49552 255.77 799 780 190.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter